Well that explains a lot, doesn't it? The article is right overall but occasionally glances over the importance of the "quality/price" ratio. As the price went down, buying habits changed, and by extension the manufacturing habits. When things are cheap nobody wants to keep them forever, they get exchanged sooner to "keep up with the times".
My anecdote, when I bought my first fridge (a tiny 70-100l I think) it cost 2.5x the average net salary in my country, and it still broke down often, but it could be repaired so it lasted 20+ years. I think today a fridge costing 2.5x the average salary - for the US this would be a ~$10-12k fridge - will be more reliable but unrepairable so when it's done, it's done.